Rim



G.- Ea GRUNDIG AND S. DIBBINS.

RIM.

APPLIQATION FILED ocr. 22. 1921.

Patentedsept. 5 192%.

m 8 m H mm WWS m MW A WITNESSES Patented Sept. 5, 1922.

UNITED. STATES PATENT orrlci-z.

GEORGE E. GRUNDIG AND SYLVESTER DIBBINS, OF BROOKLYN, NEW YORK.

RIM.

Application filed October 22, 1921. Serial No. 569,484.

To all whom it onay concern Be it known that we, (lnonon E. (JiRUNDIG and Srnrnsrna Diemlvs, both citizens of the United States, and residents of the city of New York, borough of Brooklyn, in the county of Kings and State of New York, have invented a new and Improved Rim, of which the following is a full, clear, and exact description.

The present invention relates to new and useful improvements in wheels and the like, and it pertains more particularly to a demountable rim for pneumatic tires.

It is one of the objects of the presentinvention to provide. a rim for tires in which the tire may be more readily removed from the rim than is the case with rims commonly employed.

It is a further object of the invention to provide a rim with a removable head in order that when the head is removed, the tire may he slipped on to the rim without the necessity of stretching, pulling, and the consequent bunching of the inner tube.

It is a further object of the invention to so construct a rim that cnnibersome and intricate fastening devices are eliminated.

\Vith the above and other objects in view, reference is had to the accompanying drawings, in which like characters of reference indicate corresponding parts in the several views, and in which Figure l is a perspective view of a rim constructed in accordance with the present invention with one of the beads removed therefrom Fig. 2 is a perspective view of the removed bead, and

Fig. 3 is a detail sectional view of the rim in assembled form.

Referring more particularly to the drawings. the rim comprises a bod portion 5, formed with an integral upstanding head (S. The reference character 7 designates the opposite bead ol' the rim, and said head. is provided with a plurality of wedge-shaped ondovc-tailcd lugs or projections 8.

The body portion 5 of the rim is provided 10. the head 7 is split in order that the same maybe distorted in its attachment to and detachment from the body portion 5 of the rim.

The device operates in the following manner:

The head 7 is removed from the body p0rtion of the rim after which the tire is placed over the body portion 5, this being easily accomplished with the head section removed. since the inner diameter ot the tire is slightly larger than the outer diameter of the body portion 5 of the rim. After this has been done the lugs b of the head 7 are positioned in their respective notches 9 in the rim and the tire is inflated. As the tire is inflated the out and pressure within the tire causes the projections 8 of the head 7 to bind in their respective notches or eutout portions 9 in the body portion 5 of the rim. and thus secures the removable head 7 -in position.

The notches or cut-out portions 9 are formed with inclined walls which prevent inward distortion of the head 7 and the tire in its inflated condition prevents outward distortion of the head 7. and consequently the head 7 is maintained in inflated condi--- 

